Control mechanism for governors



Jan 16, 1940. 5, JENNINGQ' JR 2,187,652

CONTROL MECHANISM FOR GOVERNORS Filed Feb. 10, 1936 2 Sheets-Sheet 1.3 1. -12 3.5 5 i 3 4 5'" i P 50 5 2 g F i A r 0 BY QQ C Tim 1940. J. a.JENNINGS. JR 5 CON'IRDL MECHANISM FOR GOVERNORS Filed Feb. '10, 1936 2Sheets-Sheet 2 Patented Jan. 16, 1940 UNlTED STATES PATENT OFFICE 7,

CONTROL MECHANISM FOR GOVERNORS Application February 10, 1938, SerialNo. 63,182

lClalm.

This invention relates to governor mechanism for internal combustionengines and particularly to mechanism of this type adapted to be mountedin an automotive vehicle.

I An object of the invention is to provide a governor especially of thevacuum operated type having a governing valve responsive to the enginesuction and wherein remote control mechanism is provided for renderingthe governor or governing valve operative or inoperative atpredetermined times.

A further object of the invention is to provide a vacuum operativegovernor with remote control mechanism adapted to be mounted, for ex- 16ample, on the dash or instrument panel of the vehicle, and adjustable torender the governor operative or inoperative as desired, theconstruction preferably embodying key operated locking mechanism forlocking the remote control mechgo anism in different adjusted positions.

A further object is to provide a relatively simple remote controlmechanism for rendering the governor operative or inoperative andcharacterized by the provision of push and pull mechanism remotelycontrolled and adapted to be locked, as by a key operated mechanism, inofl" and "on positions of the governor.

Other objects of this invention will appear in the following descriptionandappended claim,

go reference being had to the accompanying drawings forming a part ofthis specification wherein like reference characters designatecorresponding parts in the several views.

Fig. 1 is in part a longitudinal sectional elevation of a governoradapted to be controlled in accordance with the present invention.

Fig. 2 is a side elevation, partly in section, illustrating the controlmechanism adapted to be mounted on the instrument panel.

m Fig. 3 is a detail section taken through line 3-3 of Fig. 2 in thedirection of the arrows.

Fig. 4 is a perspective view, partly in section, illustrating theassembly of the governor and control mechanism in connection with adowndraft carburetor.

Before explaining in detail the present invention it is to be understoodthat the invention is not limited in its application to the details ofconstruction and arrangement of parts illustrated in.the accompanying,drawings, since the invention is capable of other embodiments and ofbeing practiced or carried out in various ways. Also it is to beunderstood that the phraseology or terminology employed herein is forthe purpose of description and not of limitation, and it is not intendedto limit the invention claimed herein beyond the requirements of theprior art.

In the drawings there is illustrated, by way of example, a suitablegovernor of the vacuum operated type adapted to be controlled in accord-6 ance with the present invention. The said governor comprises a valvecasing or body 9 adapted to be interposed in the intake pipe II, theparts being flanged to receive the retaining bolts In. The governor body8 is provided with 10 a passage Ila therethrough, which forms a part ofthe intake passage. Disposed within the passage IIa. is a governingbutterfly valve I2 secured to a rock shaft I3 joumalled in suitablebearings in the opposite walls of the casing. Se- 15 cured to the bodyportion 9 and disposed at one side of the intake passage is an elongatedcasing 9a which is formed at its forward end with a portion I4 providedwith a cylinder or piston chamber I5, the latter opening rearwardly into20 an enlarged chamber I6 within which is housed certain of theoperating mechanism. A piston I1 is mounted for reciprocation within thecylinder I5, and bolted to the piston is a rearwardly extending pistonrod I8 having a sliding bearing 25 at its free end in a boss I9.Fastened to the piston rod I8 is a cam carrier 20 upon which isadjustably mounted a cam 2|, the face of which is engaged by a camroller 22 rotatably mounted at one end of a swinging lever 23 fixed tothe 80 valve shaft I3. To the opposite end of the lever 23 is connecteda light spring 24 which is anchored to the bottom of the casing 9a. Theforward end of the piston chamber I5 is closed by means of a cap 25suitably secured thereto. 86

The governor illustrated in Fig. 1 is of the updraft type, the governingvalve I2 being interposed between the carburetor and the intakemanifold. At the upper or down-stream side of the governing valve I2 islocated a hole 26 open- 40 ing into the intake passage at the manifoldside of the governing valve. This hole communicates with a drilledpassage 21 extending through the walls of the body 9 and casing 9a. Thispassage terminates in an orifice 21a which com- 5 municates directlywith an elongated passage 21b drilled through an enlargement or boss 28on the cap 25 and also communicates at right angles with a port 210leading into the piston chamber I5 at the forward side of the piston. 60Thus, during governing operation the piston I1 is subject at one sidethereof to the partial vacuum or static pressure existing in the intakepassage II at the point 28 and at the manifold side oi the governingvalve. The opposite side of the 2 are-1.00s

piston, i. e., within the chamber II, is subject substantially toatmospheric pressure. Interposed between the piston l1 and the inner endof the cap 25 is a main spring 60 which functions to resist movement ofthe piston in the chamber ll consequent to differences in pressuresacting on opposite sides of the piston.

The governor proper, as herein illustrated and described, issubstantially the same and functions in substantially the same manner asthe governor shown and described in my copending application Serial No.520,060, filed March 4, 1931. It will be understood, of course, that theillustrated governor is shown by way of example as one suitable for usein connection with the present invention.

Mounted within the elongated passage 21b in the enlarged portion 20 ofthe cap 25 is a valve or plunger 29 having a tapered or conical terminalend 20a in line with the orifice 21a and adapted to be moved intoposition to seat therein and close of! the orifice. Secured to theopposite end of the plunger II is a Bowden wire 30 which projectsthrough a hole in a cap 20a screwthreaded onto the end of the portion 20and within which the casing "a of the wire or cable is fastened. Thecable or wire leads from the governor to a suitable remote point, ,suchas the instrument panel of an automotive vehicle, within convenientreach of the operator of the vehicle.

The control mechanism for the governor is mounted within a housing orbody 3i having a flanged end flb abutting against the rear face of theinstrument panel 32, the body 3i having a threaded extension llcextending through an aperture in the panel. The body is clamped onto thepanel by means of a nut 33. The body or housing ii is provided with acylindrical bore 34 within whichis slidingly mounted a cylindricalplunger 35. The rear end of the wire or cable 80 is fastened at 1011 tothe forward end of the plunger 35. This plunger is provided with acentral bore to receive a suitable lock mechanism having, for example, aconventional lock cylinder 80, this mechanism being controlled by meansof a key 31 insertable through a key hole in the forward end of aterminal knob 30 on the plunger II. By turning the key 81 and the lockcylinder 30, an eccentric pin 30 projecting therefrom is oscillated toactuate a latch 40. The eccentric pin 3! extends into an elongatedtransverse slot in the latch l0, the latter being slidable within avertical slot Ii in the plunger ll and having a latch projection 40!).Movement or oscillation of the eccentric pin 39 in one direction willretract the latch projection 40b and movement in the opposite directionwill extend the latch projection into either a notch 42 or a notch 43formed within the barrel ii.

The assembly of the governor and control mechanism in connection withthe instrument panel 32 of an automotive vehicle is illustrated in Fig.4. In this instance, however, the governor 0, 0a is reversed andutilized with an installation having a down-draft carburetor. As shownin this view the air cleaner, illustrated at II, is connected to theupper end of the intake pipe II. A suitable carburetor is indicated at52 and the governor I, to is interposed in the intake passage betweenthe carburetor and the intake manifold M.

Thus, it will be seen from the foregoing that I have provided a simpleand efficient means for remotely controlling a vacuum operated governor.The improved mechanism preferably includes a push and pull device suchas the manually shiftable plunger 38 and the valve or plunger 29, thelatter adapted to be shifted into and out of position to shut off thevacuum connection 21 to the suction responsive piston II. The device IIpreferably includes a key operated locking mechanism by which it may belocked either in a position to render the governing devicenon-responsive to the engine suction or vacuum or in a position, such asillustrated in Fig. 2, by which the governor may be rendered operative.Although in the present preferred form the governor valve i2 is movabletoward closed position as a result of diflerences in pressures actingthereon, yet it will be understood that a governing valve of theunbalanced butterfly type may be utilized wherein the valve is directlymovable as a result of diflerences in pressures acting thereon.

I claim:

In a governor for an internal combustion engine, a body having an intakepassage, a valve operatively mounted in said passage and adapted to openand to close the same, a cylinder with a piston adapted to actuate saidvalve, one side of said piston being exposed to substantiallyatmospheric pressure, a conduit leading from the downstream portion ofsaid passage to said cylinder to expose the opposite side of said pistonto the action of partial vacuum existing therein, said piston adapted toactuate the valve in the closing direction when the vacuum in saidportion reaches a predetermined degree, means including a longitudinallyslidable plungervalve selectively movable into a position for openingand closing said conduit, flexible cable means manually controlled froma remote point for selectively moving said plunger valve, and keyoperated locking means for locking said cable in the open position ofsaid plunger valve.

JARVIS 8. JENNINGS, JR.

